Disassembly And Reassembly Of U-Axis Speed Reducer - YASKAWA MOTOMAN-MH5S Maintenance Manual

176183-1CD
MH5S (II) /MH5F
6.3
6 Disassembly and Reassembly of Speed Reducer

6.3 Disassembly and Reassembly of U-Axis Speed Reducer

Disassembly and Reassembly of U-Axis Speed Reducer
• Refer to Fig. 6-3 "Disassembly & Reassembly of the U-Axis Speed
Reducer".
Disassembly

1. Turn OFF the DX100/DX200/FS100 power supply.
2. Connect the backup batteries with the R-, B- and T-axes motors. After
disconnect all the cables connected to the internal wiring harness,
remove the internal wiring harness to the L-arm side. (Refer to
Chapter 10 "Cable Wiring".)
3. Unscrew the hexagon socket button head screws
cover
13
4. Remove the timing belt
Reassembly of L- and U-Axis Timing Belts".)
Because the U-arm cannot keep its posture without the timing belt
be sure to support the U-arm before removing the timing belt
5. Unscrew the GT-SA bolts
generator , the bearings
3
6. Unscrew the hexagon socket head cap screw
wave generator
7. Unscrew the GT-SA bolts
the removal tap.
8. Unscrew the GT-SA bolts
removal tap. Because the casing and the L-arm are detached without
the housing , be sure to support the U-arm before removing the
11
housing .
11
9. Remove the bearing
cap screws . Then remove the flex spline
5
10. Remove the bearing
11. Remove old sealing from each parts.
 Reassembly
1. Mount the flex spline
Grease SK-1A to the inside wall of the flex spline
5mm or so.
2. Attach the conical spring washers to the hexagon socket head cap
screws and apply ThreeBond 1206C to the thread parts. Then
5
tighten them with the tightening torque shown in Table 6-3 "U-Axis
Speed Reducer Parts Checklist".
3. Press fit the bearings
the outside walls of the bearings
matching face with the casing. Smooth the surplus sealing or
adhesive with a spatula. However, be careful not to spread the sealing
inside the bearings
the bearings
10 17
4. Press fit the oil seal
the sealing adhering to the casing so that the sealing does not adhere
to the oil seal when press fit into the bearing.) Align the oil seal side
with the casing side.
5. Put the housing
the casing with the L-arm.
. (Refer to section 8.1 "Disassembly and
15
. Then remove the housing
6
and the pulley
16
and remove the pulley
3
. Then remove the circular spline
4
. Then remove the housing
4
, the oil seal and the hexagon socket head
17 18
and the oil seal
10 19
on the casing. At this time, apply Harmonic
2
into the casing. Apply ThreeBond 1206C to
10 17
and LOCTITE 638 to the
10 17
. (When replace the speed reducer, replace
10 17
too.)
into the casing. (Before the press fit, remove
18
through the L-arm and the bearing
11
HW1483638
6-8
and remove the
14
.
15
, the wave
9
with the removal tap.
8
from the removed
7
and the housing .
8 9
with
1
with the
11
.
2
.
in thickness of
2
and connect
10
,
15
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